Zerank 1 Small
Compact 1.7B parameter model with novel ELO-based training on synthetic pairwise data for calibrated relevance scores. Half the cost of competing rerankers while maintaining strong ranking quality.
Model Information
- Provider
- ZeroEntropy
- License
- Open Source
- Price per 1M tokens
- $0.025
- Release Date
- 2025-07-10
- Model Name
- zerank-1-small
- Total Evaluations
- 3300
Performance Record
Wins1816 (55.0%)
Losses1355 (41.1%)
Ties129 (3.9%)
Wins
Losses
Ties
Performance Overview
ELO ratings by dataset
Zerank 1 Small's ELO performance varies across different benchmark datasets, showing its strengths in specific domains.
Zerank 1 Small - ELO by Dataset
Detailed Metrics
Dataset breakdown
Performance metrics across different benchmark datasets, including accuracy and latency percentiles.
PG
ELO 161858.0% WR319W-231L-0T
Accuracy Metrics
- nDCG@5
- 0.000
- nDCG@10
- 0.000
- Recall@5
- 0.000
- Recall@10
- 0.000
Latency Distribution
- Mean
- 287ms
- P50 (Median)
- 274ms
- P90
- 345ms
DBPedia
ELO 157359.3% WR326W-175L-49T
Accuracy Metrics
- nDCG@5
- 0.000
- nDCG@10
- 0.000
- Recall@5
- 0.000
- Recall@10
- 0.000
Latency Distribution
- Mean
- 226ms
- P50 (Median)
- 223ms
- P90
- 241ms
business reports
ELO 154753.1% WR292W-249L-9T
Accuracy Metrics
- nDCG@5
- 0.000
- nDCG@10
- 0.000
- Recall@5
- 0.000
- Recall@10
- 0.000
Latency Distribution
- Mean
- 251ms
- P50 (Median)
- 242ms
- P90
- 298ms
MSMARCO
ELO 153548.7% WR268W-240L-42T
Accuracy Metrics
- nDCG@5
- 0.000
- nDCG@10
- 0.000
- Recall@5
- 0.000
- Recall@10
- 0.000
Latency Distribution
- Mean
- 217ms
- P50 (Median)
- 214ms
- P90
- 227ms
arguana
ELO 150754.7% WR301W-239L-10T
Accuracy Metrics
- nDCG@5
- 0.279
- nDCG@10
- 0.375
- Recall@5
- 0.520
- Recall@10
- 0.820
Latency Distribution
- Mean
- 256ms
- P50 (Median)
- 254ms
- P90
- 280ms
FiQa
ELO 145256.4% WR310W-221L-19T
Accuracy Metrics
- nDCG@5
- 0.114
- nDCG@10
- 0.124
- Recall@5
- 0.098
- Recall@10
- 0.125
Latency Distribution
- Mean
- 248ms
- P50 (Median)
- 244ms
- P90
- 266ms
Compare Models
See how it stacks up
Compare Zerank 1 Small with other top rerankers to understand the differences in performance, accuracy, and latency.